基于忙音多址的多信道无线Mesh网的MAC协议

摘要

无线Mesh网(WMN)是一种新犁宽带无线接入技术,选择适当的MAC子层规范,根据网络业务特征有效地配置信道资源,可以提高Mesh网的无线资源使用效率以及系统传输性能.而现有的无线Mesh网络基本上是采用单信道MAC协议,不能满足日益俱增的用户需求,限制了整个网络的数据传输速率与网络容量.文中基于忙音多址访问的设计思想,结合无线Mesh网络的特点,提出了一种无线Mesh网MAC协议MCBTMA(Multi-Channel Busy Tone Multiple Access).MCBTMA通过构建多个忙信号控制信道和多个数据信道,在MAC层进行多信道调度,使无线Mesh网络在吞吐量和时延方面性能有显著提高.%Wireless Mesh Network (WMN) is a new type of broadband wireless access technology, which adopts appropriate MAC protocol specification and configures channel resources effectively according to network service features. It improves the wireless resources efficiency and transmission performance of the system. The single channel MAC protocols are mostly used in WMN. The increase of the user requirement limited the data transmit speed and the capacity of the network. Proposes a kind of Wireless Mesh Network MAC protocol named MCBTMA which is based on the design philosophy of busy-tone multiple access and is combined with the characteristics of the WMN. By constructing several busy-tone control channels and data channels, the MCBTMA schedules the multiple channels on the MAC layer to achieve the improvement of performance of throughput and delay the WMN.